Thursday, August 17, 2017

The ELECTRIC RAY

Atlantic torpedo ( Torpedo nobiliana )
pic by SEFSC Pascagoula Laboratory;
Collection of Brandi Noble,
NOAA/NMFS/SEFSC - NOAA's Fisheries Collection
The electric rays are a group of rays, flattened cartilaginous fish with enlarged pectoral fins, that comprise the order Torpediniformes. They are known for being capable of producing an electric discharge, ranging from as little as 8 volts up to 220 volts depending on species, used to stun prey and for defense. There are 69 species in four families.

Perhaps the most known members are those of the genus Torpedo, also called crampfish and numbfish, after which the device called a torpedo is named. The name comes from the Latin "torpere", to be stiffened or paralyzed, referring to the effect on someone who handles or steps on a living electric ray.

Torpedo rays are excellent swimmers. Their round disk shaped bodies allow them to remain suspended in the water or roam for food with minimal swimming effort.


Description
Electric rays have a rounded pectoral disc with two moderately large rounded-angular (not pointed or hooked) dorsal fins (reduced in some narkids), and a stout, muscular tail with a well-developed caudal fin. The body is thick and flabby, with soft, loose skin devoid of dermal denticles and thorns. A pair of kidney-shaped electric organs are found at the base of the pectoral fins. The snout is broad, large in the Narcinidae but reduced in all other families. The mouth, nostrils, and five pairs of gill slits are located underneath the disc.

They are bottom dwelling fish, found from shallow coastal waters down to at least 1,000 metres (3,300 ft) depth. They are sluggish and slow moving, propelling themselves along with their tails, rather than using their disc-shaped bodies, as other rays do. They feed on invertebrates and small fish. They lie in wait for prey below the sand or other substrate, using their electricity to stun and capture it.

Sunday, March 19, 2017

OAK ISLAND The Money Pit

Located off the coast of Nova Scotia, Oak Island is said to be hiding the greatest treasure in history.  Riches have been spent and lives have been lost, since the late 1700’s, but no one has ever been able to find the jackpot.  Seven people will die, it has been predicted, before the treasure is found. So far, six have perished in accidents over the years.

Oak Island, Nova Scotia